NHTSA Complaint #11435568 — 2014 CADILLAC CTS

During a service appointment, on my 2014 Cadillac CTS, the dealership pointed out that both axle seals on the differential appears to be leaking. On a subsequent inspection conducted on 8/24/2021, by the dealership, it was confirmed that both axle seals were leaking. At the time of the inspection the vehicle had 120,873 miles showing on the odometer. These two reports were the initial indication that the axle seal were leaking. The dealership has maintained the vehicle since I purchased it from them. I checked to see was if there was a Service Bulletin on this issue, but there was none. However, there was a Service Bulletin (Bulletin No. PIP5075A) concerning "Rear Axle Leak From The Vent" on the differential on the 2011-2013 Cadillac CTS and CTS-V. I contend that GM over compensated for the vent leak and now the vent on the differential of the 2014 Cadillac CTS does not release the built up air pressure which is causing the seals to leak. It is only a matter of time when the differential will lock up due to lack of lubricant and cause a serious accident. I contacted GM on this issue, but they do not want to admit there is a problem. However, if you look up complaints on the internet, there are many many people with this issue on Cadillac's CTS and ATS. There needs to be at a minimum a Service Bulletin issued. I would recommend a recall to correct this problem.